tabular-data-json-export-widget/src/main/java/org/gcube/portlets/user/td/jsonexportwidget/client/JSONExportConfigCard.java

package org.gcube.portlets.user.td.jsonexportwidget.client;

import java.util.ArrayList;

import org.gcube.portlets.user.td.gwtservice.shared.json.JSONExportSession;
import org.gcube.portlets.user.td.gwtservice.shared.tr.ColumnData;
import org.gcube.portlets.user.td.jsonexportwidget.client.grid.ColumnDataGridPanel;
import org.gcube.portlets.user.td.wizardwidget.client.WizardCard;

import com.allen_sauer.gwt.log.client.Log;
import com.google.gwt.event.logical.shared.SelectionEvent;
import com.google.gwt.event.logical.shared.SelectionHandler;
import com.google.gwt.user.client.Command;
import com.google.gwt.user.client.ui.HorizontalPanel;
import com.sencha.gxt.core.client.util.Padding;
import com.sencha.gxt.core.client.util.ToggleGroup;
import com.sencha.gxt.widget.core.client.box.AlertMessageBox;
import com.sencha.gxt.widget.core.client.container.VerticalLayoutContainer;
import com.sencha.gxt.widget.core.client.event.HideEvent;
import com.sencha.gxt.widget.core.client.event.HideEvent.HideHandler;
import com.sencha.gxt.widget.core.client.form.FieldLabel;
import com.sencha.gxt.widget.core.client.form.FormPanel;
import com.sencha.gxt.widget.core.client.form.Radio;
import com.sencha.gxt.widget.core.client.tips.ToolTip;
import com.sencha.gxt.widget.core.client.tips.ToolTipConfig;

/**
 * 
 * @author "Giancarlo Panichi" <a
 *         href="mailto:g.panichi@isti.cnr.it">g.panichi@isti.cnr.it</a>
 * 
 */
public class JSONExportConfigCard extends WizardCard {

	private static final int LABEL_WIDTH = 128;
	private static final int LABEL_PAD_WIDTH = 2;
	
	protected JSONExportSession exportSession;

	

	private Radio viewColumnExportTrue;
	private Radio viewColumnExportFalse;

	protected ColumnDataGridPanel jsonColumnGridPanel;

	public JSONExportConfigCard(final JSONExportSession exportSession) {
		super("JSON configuration", "");

		if (exportSession == null) {
			Log.error("JSONExportSession is null");
		}
		this.exportSession = exportSession;

		FormPanel panel = createPanel();
		setContent(panel);

	}

	protected FormPanel createPanel() {
		FormPanel panel = new FormPanel();
		panel.setLabelWidth(90);
		panel.getElement().setPadding(new Padding(5));

		VerticalLayoutContainer content = new VerticalLayoutContainer();
		panel.add(content);

		// Export View Column
		viewColumnExportTrue = new Radio();
		viewColumnExportTrue.setBoxLabel("True");
		viewColumnExportTrue.setValue(true);

		viewColumnExportFalse = new Radio();
		viewColumnExportFalse.setBoxLabel("False");

		ToggleGroup exportViewColumnGroup = new ToggleGroup();
		exportViewColumnGroup.add(viewColumnExportTrue);
		exportViewColumnGroup.add(viewColumnExportFalse);
		
		HorizontalPanel viewColumnExportPanel = new HorizontalPanel();
		viewColumnExportPanel.add(viewColumnExportTrue);
		viewColumnExportPanel.add(viewColumnExportFalse);
		
		new ToolTip(viewColumnExportPanel, new ToolTipConfig(
				"Export View Columns Too"));
		FieldLabel fieldViewColumns=new FieldLabel(viewColumnExportPanel, "Export View Columns");
		fieldViewColumns.setLabelWidth(LABEL_WIDTH);
		fieldViewColumns.setLabelPad(LABEL_PAD_WIDTH);
		content.add(fieldViewColumns);

		// Column Selection Grid
		jsonColumnGridPanel = new ColumnDataGridPanel(this);

		jsonColumnGridPanel
				.addSelectionHandler(new SelectionHandler<ColumnData>() {

					public void onSelection(SelectionEvent<ColumnData> event) {

					}

				});

		content.add(jsonColumnGridPanel);

		return panel;
	}

	
	
	protected boolean getExportViewColumns() {
		if(viewColumnExportTrue.getValue()){
			return true;
		} else {
			return false;
		}
	}

	@Override
	public void setup() {
		Log.debug("JSONExportConfigCard Setup");
		Command sayNextCard = new Command() {

			public void execute() {
				Log.debug("JSONExportConfigCard Call sayNextCard");
				checkData();
			}

		};

		getWizardWindow().setNextButtonCommand(sayNextCard);
		setEnableBackButton(false);
		setEnableNextButton(true);
	}

	protected void checkData() {
		getWizardWindow().setEnableNextButton(false);
		getWizardWindow().setEnableBackButton(false);
		AlertMessageBox d;
		HideHandler hideHandler = new HideHandler() {

			public void onHide(HideEvent event) {
				getWizardWindow().setEnableNextButton(true);
				getWizardWindow().setEnableBackButton(false);

			}
		};

		ArrayList<ColumnData> columns = jsonColumnGridPanel.getSelectedItems();
		if (columns.size() == 0) {
			d = new AlertMessageBox("Attention", "No columns selected");
			d.addHideHandler(hideHandler);
			d.setModal(false);
			d.show();
		} else {
			exportSession.setColumns(columns);
			exportSession.setExportViewColumns(getExportViewColumns());
			goNext();
		}

	}

	protected void goNext() {
		try {
			DestinationSelectionCard destCard = new DestinationSelectionCard(
					exportSession);
			getWizardWindow().addCard(destCard);
			getWizardWindow().nextCard();
		} catch (Exception e) {
			Log.error("sayNextCard :" + e.getLocalizedMessage());
		}
	}

	@Override
	public void dispose() {

	}

}